398732282 has 16 divisors (see below), whose sum is σ = 651346920. Its totient is φ = 181961472.

The previous prime is 398732221. The next prime is 398732287. The reversal of 398732282 is 282237893.

It can be written as a sum of positive squares in 4 ways, for example, as 94264681 + 304467601 = 9709^2 + 17449^2 .

It is not an unprimeable number, because it can be changed into a prime (398732287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83843 + ... + 88470.

Almost surely, 2^398732282 is an apocalyptic number.

398732282 is a deficient number, since it is larger than the sum of its proper divisors (252614638).

398732282 is a wasteful number, since it uses less digits than its factorization.

398732282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172417.

The product of its digits is 290304, while the sum is 44.

The square root of 398732282 is about 19968.2818990518. The cubic root of 398732282 is about 736.0270904588.

The spelling of 398732282 in words is "three hundred ninety-eight million, seven hundred thirty-two thousand, two hundred eighty-two".